Umbrella structure

Details Umbrella structure Umbrella structure

1998-10-28

1999-12-28

Friedman, Carl D.

Tent, canopy, umbrella, or cane

Umbrella

Cover or lining feature

135 31, 135 94, A45B 2526

Patent

active

060067691

ABSTRACT:
The umbrella has a frame composed of a plurality of ribs, stretchers and a combined panel consisting of a main panel and a secondary panel, wherein, the area of the main panel is smaller than that of the fully expanded ribs of the frame, and the inner edge of the secondary panel matches the outer edge of the main panel. The main and secondary panels concentrically cover the frame, and a plurality of ropes are mounted between the inner edge of the secondary panel and the frame, which are used to increase spaces between the outer edge of the main panel and the inner edge of the secondary panel, and moreover, improve efficiency of air convection, save panel material and simplify manufacturing procedures.

REFERENCES:
patent: 3456661 (1969-07-01), Farley
patent: 3794054 (1974-02-01), Watts
patent: 3896830 (1975-07-01), Sharick
patent: 4838293 (1989-06-01), Novak
patent: 4865063 (1989-09-01), Williams
patent: 5078166 (1992-01-01), Lee
patent: 5368055 (1994-11-01), Johnson et al.

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